From: Bill Kelly <billk@...>
Date: 2005-09-27T13:35:19+09:00
Subject: Re: Relative speed of Ruby vs Java for a large compiled app like Freenet

From: "Tanaka Akira" <akr@m17n.org>
> In article <019301c5c2f2$c9431ca0$6442a8c0@musicbox>,
>   "Bill Kelly" <billk@cts.com> writes:
> 
> > Note that it should also be possible to call setrlimit()
> > directly from ruby, using the built-in 'dl' library.
> 
> Also note that Ruby 1.9 has Process.setrlimit.

Sweet!!  =D

Incidentally, does anyone know what I'm doing wrong here?
I tried to make the call with 'dl', but I'm getting an
error:

(eval):2:in `setrlimit': undefined method `[]' for nil:NilClass (NoMethodError)
        from rlimit2.rb:16

~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
#!/usr/bin/env ruby

require 'dl/import'

module LIBC
  extend DL::Importable
  dlload "libc.so"
  RLIMIT_STACK = 3
  RLIM_INFINITY = -1
  extern "int setrlimit(int, const void *)"
end

include LIBC

rlimit = [RLIM_INFINITY,RLIM_INFINITY].pack('LL').to_ptr
result = setrlimit(RLIMIT_STACK, rlimit)  # this is line 16

puts result

~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

According to http://www.jbrowse.com/text/rdl_en.html I thought
my code should work?


Thanks,

Regards,

Bill